1 files changed, 100 insertions, 0 deletions
diff --git a/iconvdata/iso-ir-165.h b/iconvdata/iso-ir-165.h
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+++ b/iconvdata/iso-ir-165.h
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+/* Tables for conversion to and from ISO-IR-165.
+   converting from UCS using gaps.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _ISO_IR_165_H
+#define _ISO_IR_165_H	1
+
+#include <gconv.h>
+#include <stdint.h>
+
+struct gap
+{
+  uint16_t start;
+  uint16_t end;
+  int32_t idx;
+};
+
+/* Table for ISO-IR-165 (CCITT Chinese) to UCS4 conversion.  */
+#define ISOIR165_FROMSIZE	0x2284
+extern const uint16_t __isoir165_to_tab[ISOIR165_FROMSIZE];
+
+
+/* XXX If we at some point need an offset value to decode the byte
+   sequences another parameter can be added.  */
+static inline uint32_t
+ucs4_from_isoir165 (const char **s, size_t avail)
+{
+  unsigned char ch = *(*s);
+  unsigned char ch2;
+
+  if (ch <= 0x20 || ch >= 0x7f)
+    return __UNKNOWN_10646_CHAR;
+
+  if (avail < 2)
+    return 0;
+
+  ch2 = (*s)[1];
+  if (ch2 <= 0x20 || ch2 >= 0x7f)
+    return __UNKNOWN_10646_CHAR;
+
+  return (__isoir165_to_tab[(ch - 0x21) * 94 + (ch2 - 0x21)]
+	  ?: __UNKNOWN_10646_CHAR);
+}
+
+
+/* Tables for ISO-IR-165 (CCITT Chinese) from UCS4 conversion.  */
+extern const struct gap __isoir165_from_idx[];
+extern const char __isoir165_from_tab[];
+
+static inline size_t
+ucs4_to_isoir165 (uint32_t wch, char *s, size_t avail)
+{
+  unsigned int ch = (unsigned int) wch;
+  const char *cp;
+  const struct gap *rp = __isoir165_from_idx;
+
+  if (ch > 0xffe5)
+    /* This is an illegal character.  */
+    return __UNKNOWN_10646_CHAR;
+
+  while (ch > rp->end)
+    ++rp;
+  if (ch < rp->start)
+    /* This is an illegal character.  */
+    return __UNKNOWN_10646_CHAR;
+
+  /* The two bytes following the index given in this record give the
+     encoding in ISO-IR-165.  Unless the bytes are zero.  */
+  cp = &__isoir165_from_tab[(ch + rp->idx) * 2];
+  if (*cp == '\0')
+    /* This is an illegal character.  */
+    return __UNKNOWN_10646_CHAR;
+
+  if (avail < 2)
+    return 0;
+
+  s[0] = cp[0];
+  s[1] = cp[1];
+
+  return 2;
+}
+
+#endif	/* iso-ir-165.h */